Miter-box.



No. 824,298. PATENTED JUNE 26, 1906.

I J. N. HOUSE.

MI'TER BOX.

APPLICATION FILED JUNE 22, 1905.

UNITED STATES PATENT OFFICE.

JAMES N. HOUSE, OF JACKSON, MICHIGAN, ASSIGNOR OF ONE-THIRD TO G. E.WALLACE AND ONE-THIRD TO WM. SPARKS, OF JACKSON,

MICHIGAN.

'MITER BOX.

Specification of Letters Patent.

Patented June 26, 1906.

To all whom, it may concern:

Be it known that I, J AMES N. HoUsE, a citizen of the United States,residing at Jackson, in the county of Jackson and State ofMichigan, haveinvented a new and useful Improvement in Miter-Boxes, of which thefollowing is a specification.

This invention relates to a miter-box in which the saw-guide can be setat any desired angle both with respect to the length and thickness ofthe timber to be sawed and also in which the guide is carried by a blockdetachable from the miter-box proper, so that it can be used separatefrom the box.

The invention consists in the novel features of construction hereinafterfully described, pointed out in the claims, and shown in theaccompanying drawings, in which Figure 1 is a plan view. Fig. 2 is aside elevation. Fig. 3 is a detail vertical elevation of theintersecting portions of two crosspieces.

In the drawings, A represents a suitable base, which mayrest upon atable or bench or which may be provided with suitable supporting-feet,as may be most convenient. The base A is provided adjacent one end witha flange A, having an undercut inner,

edge A and at the opposite end the base is provided with a verticalflange A having a curved inner edge portion A", and the flange isslightly cut away at the upper end of said curved edge, as shown at AThe block B has a longitudinal groove on its under face, as shown indotted lines at B, whereb the block is adapted to fit over the verticalange A and to the right of the inner end of said groove B the block isslotted, as shown in dotted lines B in Fig. 1, said slot being curved,and to the right of the slot B is a curved vertical slot {13 An arc C,forming a half-circle, slides in the slot B and the ends of said are areconnected by a crosspiece C, the ends of said cross-piece beingrotatably journaled between the ends of the arc. A second are D worksthrough the slot B and between the ends of the are D is carriedrotatably the cross-piece D, which intersects at right angles thecross-piece C, and at the point of intersection the cross-pieces are cutaway on their adjacent faces, as shown at C and D and are pivotedtogether by a suitable pivot-pin E. The cross-piece C carries on itsouter face a member F of the saw-guide, and a parallel member F issupported by curved spring-loops F connected at one end to the guidemember F and at their opposite ends to the inner face of the crosspieceC Upon one side of the block B is pivoted an eccentric G, having ahandle G, by means of which the eccentric is rotated into and out ofbindin engagement with the arc C. On the upper ace of the block ispivoted an eccentric H, having a handle H, by which the eccentric H ismoved into and out of engagement with the arc D, and b means of theseeccentrics the arcs can be fbcked in an adjusted position.

It will be obvious from this description and from the drawings that theare C will work in a horizontal position, and by moving the same backand forth through the slot B the saw-guides can be thrown at any desiredangle across the timber to be sawed, the said timber shown in Figs. 1and 2 at J. It will also be obvious that by moving the are D the saw canbe thrown at an angle with respect to the upper surface of the timberand that by adjusting both of the arcs the saw will out diagonally withrespect to the width of the timber and also at an oblique angle withrespect to the thickness of the timber, and it will further be notedthat no matter what adjustment is given to the are C and D, andconsequently no matter what angle or angles the saw may be working at,the given center indicated by the pivotal pin E is substantially alwaysin the same place. It will also be obvious that when it is desired touse the guide upon a piece of heavy timber where it would not beconvenient to use the miterbox the block B, with the arc C and D andparts carried thereby, can be readily lifted from the vertical flange Aand used independently of the base A and the flanges carried by thebase.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is

1. In a device of the kind described, a block having curved slots atsubstantially right angles to each other, arcs working through saidslots, cross-pieces rotatably carried between the ends of the arcs, saidcrosspieces being pivoted at their point of intersection and a saw-guidecarried by one of said cross-pieces.

2. A device of the kind described comprising an arc, Working in ahorizontal plane, a second are working Within the first-mentioned arcand at right angles to the same, cross-pieces rotatably carried betweenthe ends of said arcs, and pivoted together at their point ofintersection, and a saw-guide carried by the cross-piece of thehorizontal arc.

3. A miter-box, comprising a detachable block, a movable horizontal arecarried by the block, a rotatable cross-piece connecting the ends of thearc, a vertically-Working are carried by the block, a rotatablecrosspiece connecting the ends of the last-mentioned are, a pivot-pinconnecting the crosspieces at their point of intersection, and asaw-guide carried by a cross-piece connecting the ends of the horizontalarc.

4. A device of the kind described comprising a block having a curvedhorizontal slot formed therein and a curved vertical slot, arcs Workingthrough said slots, respectively, cross-pieces rotatably connected tothe ends of the said arcs, and pivoted to each other at their point ofintersection, means for locking the arcs in their adjusted positions,and a saw-guide consisting of the vertical member carried by thecross-piece connecting the ends of the horizontal arc, and a parallelmember supported by spring-loops carried by the said cross-pieces, asand for the purpose set forth.

JAMES N. HOUSE.

Witnesses:

GEORGE R. STONE, WALTER L. STEVENS.

